Ethnic Origins:
In Indonesia there are more than 300 ethnic groups, the main ones being the Javanese (about 40%), the Sundanese (about 15%), the Malay (4%), the Batak (4%), as well as the Madurese, the Minangkabau, the Betawi, the Bugis, the Papuans. Among the minorities of non-Indonesian origin are the Chinese, Indians and Arabs. (Statistics Indonesia).

Official Language:
Indonesian (Bahasa Indonesia)

Other Languages Spoken:
There are about 700 languages. The most commonly spoken are Javanese (70 million), Sundanese (20 million), Madurese (9 million) and Malay (15 million). English is also spoken.